^^ For sure, Casimero is going after Inoue but he has to wait, and all he can do right now is call him through his social media accounts and it's obvious that it's just for publicity stunt as he knows that his time is running out.
Inoue is scheduled to fight Nery and then another boxer that Tapales has beaten already. And only after that Casimero might get his chance, but still up to Inoue as Casimero's name is somewhat in the middle as far as super bantamweight goes as he is no longer a champion, so he has no leverage but to create a hype and call Inoue in his social media for publicity.
casimero is not a big boxer and not a top boxer. and only from the philippines not the USA. so it will be difficult to fight inoue. not because of his boxing quality but promoters need big names so that their boxing events can generate large profits and a lot. if inoue is of course whoever the opponent is offered by the promoter must be served. if the promoter doesn't want it, it's hard for a fight to happen.
Yes, it depends on the promoter but I disagree with you about Casimero not a top boxer, only popular in the Philippines, not in the US. Even Inoue is not popular in US since most of his fights are in Japan, but if you care to look at Casimero's record, you will see that he had been in many country to challenge their champion, that's why he is called a road warrior.
As per record, Casimero has more fights in US/Europe than Inoue.
John Riel Casimero' boxing record.